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人tumstatin 基因的克隆表达及其鉴定

颜廷东, 宋娜玲, 赵启仁, 刘家慧, 贺 欣, 褚丽萍, 张春明

颜廷东, 宋娜玲, 赵启仁, 刘家慧, 贺 欣, 褚丽萍, 张春明. 人tumstatin 基因的克隆表达及其鉴定[J]. 肿瘤防治研究, 2007, 34(11): 836-838. DOI: 10.3971/j.issn.1000-8578.1692
引用本文: 颜廷东, 宋娜玲, 赵启仁, 刘家慧, 贺 欣, 褚丽萍, 张春明. 人tumstatin 基因的克隆表达及其鉴定[J]. 肿瘤防治研究, 2007, 34(11): 836-838. DOI: 10.3971/j.issn.1000-8578.1692
YAN Ting-dong, SONG Na-ling, ZHAO Qi-ren, LIU Jia-hui, HE Xin, CHU Li-ping, ZHANG Chun-ming. Cloning of Human tumstatin Gene and Expression of Its Recombinant Protein[J]. Cancer Research on Prevention and Treatment, 2007, 34(11): 836-838. DOI: 10.3971/j.issn.1000-8578.1692
Citation: YAN Ting-dong, SONG Na-ling, ZHAO Qi-ren, LIU Jia-hui, HE Xin, CHU Li-ping, ZHANG Chun-ming. Cloning of Human tumstatin Gene and Expression of Its Recombinant Protein[J]. Cancer Research on Prevention and Treatment, 2007, 34(11): 836-838. DOI: 10.3971/j.issn.1000-8578.1692

人tumstatin 基因的克隆表达及其鉴定

详细信息
    通讯作者:

    赵启仁

  • 中图分类号: R730. 54

Cloning of Human tumstatin Gene and Expression of Its Recombinant Protein

More Information
    Corresponding author:

    ZHAO Qi-ren

  • 摘要: 目的 重组表达人tumstatin,为人tumstatin的肿瘤受体显像奠定基础。方法 提取HEK293细胞总RNA,通过RT-PCR扩增人tumstatin基因,导入pMD19-T,测序,然后亚克隆至pET28a,IPTG诱导表达,产物进行SDS-PAGE分析和Westernblot鉴定。结果 提取的总RNA经电泳,有清晰的28S和18S两条带。RT-PCR扩增产物长度与理论值750bp相一致。测序证实tumstatin基因正确插入载体中。重组人tumstatin在大肠杆菌中高效表达,表达量约占菌体总蛋白量的30%。Westernblot证实所表达蛋白为目的蛋白。结论 重组人tumstatin蛋白在大肠杆菌中高效表达,为进一步的tumstatin的肿瘤受体显像奠定基础。

     

    Abstract: Objective  To clone human tumstatin gene, express its recombinant protein for further research. Methods  Total RNA was extracted from HEK293 cell. The tumstatin gene was amplified by RT-PCR, then cloned into pMD19-T and sequenced. Subsequently, the tumstatin gene was cloned into the p ET28a and t ransformed into E. coli BL21 (DE3) where it was induced to express by IPTG. The products were identified by SDS-PA GE and Western blot . Results  RT-PCR product was about 750bp, its sequence was the same as that of tumstatin reported. The expression vector pET28a-tumstatin was constructed successfully, and there was a new protein band about Mr 29 KD on SDS-PAGE. The ratio of the expressed product to total bacterial proteins was 30 %. The result of Western blot demonst rated that the expressed product was the tumstatin protein. Conclusion  Human tumstatin gene was cloned and its recombinant proteins were expressed successfully in this study.

     

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出版历程
  • 收稿日期:  2006-11-30
  • 修回日期:  2007-03-21
  • 刊出日期:  2007-11-04

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